Solve 0 = 5*u - 2*v + 1, v = -28*u + 30*u for u.

-1

Solve -3*g = -3*z + 18, -2*g - 19 = -3*z - 6 for z.

1

Solve z = 3*m - 5, -2*m + 5*z - 4*z + 2 = 0 for m.

3

Solve -r + 0*z - 4*z = -20, -4 = -2*r + z for r.

4

Solve 5*h - 14 = -9, 0 = -3*i + 5*h + 1 for i.

2

Solve -3*p + q = -8*p + 23, -2*p - 2*q = -14 for p.

4

Solve -10 = 8*t - 10*t, m + 3*t - 15 = 0 for m.

0

Solve 4*m - 20 = 0, -31*b + 4 = -28*b + 5*m for b.

-7

Solve 0 = -3*b - 12, c + 4*b + 41 = -4*c for c.

-5

Solve -3*d + f + 3 = 0, -4*f + 5*f = 0 for d.

1